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TEL185B & tel185e 1 05050.r3 11/03 www .protekde vices.com telephone interface protector only one name means protektion? applica tions ? telcom equipment connected to telcom lines ? line connected modems & fax machines ? remote telephone extensions ? private wire/leased phone lines iec compa tibility (en61000-4) ? 61000-4-2 (esd): air - 15kv, contact - 8kv ? 61000-4-4 (eft): 40a - 5/50ns ? 61000-4-5 (surge): 8/20s - 95a, level 4 (line-gnd) & 48a, level 4 (line-line) fea tures ? designed for 185 volt (peak) telephone lines ? 4 wire, line-to-ground protection ? permanent two-stage protection ? subnanosecond response time ? automatic reset - does not interrupt service ? effective against lightning, inductive switching and esd mechanical characteristics ? weight: TEL185B - 28 grams & tel185e - 142 grams (approximate) ? flammability rating ul 94v-0 ? device marking: case - logo, terminal designations & part number board - logo, date code & part number description the TEL185B/e is a two-stage transient voltage protector that provides primary and secondary protection against lightning, inductive switching and electrostatic discharge (esd) transient threats. the first stage diverts the transient current through the ground terminal return path and the second stage clamps the voltage to a safe level without interruption of service. the TEL185B/e is designed to protect telcom lines from common mode (line-to- ground) transients. there are four (4) independent lines referenced to the ground terminals. 05050 tel185e TEL185B www.datasheet.co.kr datasheet pdf - http://www..net/
2 www .protekde vices.com 05050.r3 11/03 TEL185B & tel185e device characteristics installation instructions there are five (5) terminals on both the line and equipment side of the tel185e - four telcom line terminals and one ground terminal. the ground terminal, as shown on the label, is connected internally. a single ground connection is sufficient. however, it is recommended that both ground connections be used for a lower impedance path to earth. this connection can be made through the green ac power ground wire or a known earth ground. the ground wire should be #14 stranded wire. incoming telcom lines are cut or disconnected from the equipment to insert the tel185e product. the line side of the terminals are to be connected to outside telephone or telecommunication lines that carry the transient threats into the equipment to be protected. the equipment side of the terminals are to be connected to the equipment to be protected. the location of the product should be such that these wires are as short as possible. a #18 or 20 gauge wire can be used for these connections. the TEL185B requires an edge connector interface for installation. a standard 15 position edge connector can be used. when mounting or wiring the connectors onto a printed circuit board, be sure that the correct terminals are soldered. the line side of the board connections are finger contacts 2 thru 5. the boards are conformal coated for limited protection against moisture. protek?s telcom line protector is designed with a short circuit failure mode to give maximum protection. a fuse, ptc, fussable link, or circuit breaker is recommended for each signal line on the input (line) side of the protector for those applications that require an open circuit failure mode. caution: a low dc resistance ground may not be indicative of a good lightning ground. lightning contains a broad spectrum of frequencies - up to 1 mhz. a low impedance path to ground at the transient frequen- cies is necessary. a ground strap is recommended or a #6 awg stranded wire. for wire lengths over 1.5 meters, there may be some excessive line to earth potential under severe thunderstorm conditions. for these applications, an additional protector may be necessary at the equipment interface. maximum ratings @ 25c maximum clamping voltage (8/20s) @ 500a v c volts maximum leakage current @ 185v op i d a maximum capacitance @ 0v, 1mhz c pf peak operatiing line voltage (v op ) operating line current (i o ) maximum transient voltage maximum transient current (8/20s waveform) operating & storage temperature response time electrical characteristics @ 25c 185v peak 200ma 20kv 10ka/wire 40ka/protector -55c to 100c < 1 nanosecond maximum line thruput resistance r ohms 330 12 5 800 www.datasheet.co.kr datasheet pdf - http://www..net/
3 www .protekde vices.com 05050.r3 11/03 TEL185B & tel185e package outline & dimensions

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tel185e case outline TEL185B board outline copyright ? prot ek devices 2005 specifications: protek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except jedec). design changes: protek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is the buyer?s and that in furnishing engineering and technical assistance, protek assumes no responsibility wit h respect to the selection or specifications of such products. protek devices 2929 south fair lane, tempe, az 85282 tel: 602-431-8101 fax: 602-431-2288 e-mail: sales@protekdevices.com web site: www.protekdevices.com www.datasheet.co.kr datasheet pdf - http://www..net/

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